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Authors

MassimoManginoDepartment of Twin Research and Genetic Epidemiology, King's College London, London, UKNational Institute for Health Research (NIHR) Biomedical Research Centre at Guy's and St. Thomas’ Foundation Trust, London, UKPubMed articlesGoogle scholar articles

LeneChristiansenEpidemiology Unit, The Danish Aging Research Center and The Danish Twin Registry, Institute of Public Health, University of Southern Denmark, Odense, DenmarkDepartment of Clinical Genetics, and Department of Clinical Biochemistry and Pharmacology, Odense University Hospital, Odense, DenmarkPubMed articlesGoogle scholar articles

IngePetersenEpidemiology Unit, The Danish Aging Research Center and The Danish Twin Registry, Institute of Public Health, University of Southern Denmark, Odense, DenmarkPubMed articlesGoogle scholar articles

KaareChristensenEpidemiology Unit, The Danish Aging Research Center and The Danish Twin Registry, Institute of Public Health, University of Southern Denmark, Odense, DenmarkDepartment of Clinical Genetics, and Department of Clinical Biochemistry and Pharmacology, Odense University Hospital, Odense, DenmarkPubMed articlesGoogle scholar articles

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Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissionsThis is an Open Access article distributed in accordance with the terms of the Creative Commons Attribution (CC BY 4.0) license, which permits others to distribute, remix, adapt and build upon this work, for commercial use, provided the original work is properly cited. See: http://creativecommons.org/licenses/by/4.0/